it c B re&a 1*tus quadrati: at cum anguli ad a rc&i fmt utrinq;, & linc*a b, a c ,a darquales, quia ex centro erit, ut anguli a c d,adc,adb,abd fint sequales & dimidium recti: totus igi-turDrcctus,&quadratumB casqualc quadratisD c &db:igitur d c &d B,femidimetientes… … L I B. I I. C A P. X I. ?i geum & pcrigeum, eadem funt cum his cjua: funt Vencris:Solque ipfe femper fub ecliptica octaui orbi^ dcfertur, il-liusmutationes undequaquereferens in longitudine la-titudineque : anticiparunt autem xquinoctia fcmperabannis quadringenti; atitc Chriltum,ufquead…
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